Source: Bureau of Meteorology

For people in parts of Illawarra, South Coast, Central Tablelands, Southern Tablelands, South West Slopes, Snowy Mountains and Australian Capital Territory Forecast Districts.

Issued at 3:06 pm Monday, 4 September 2017.

VIGOROUS WINDS OVER SOUTHEAST NSW

A deep low pressure system south of Tasmania is driving vigorous westerly winds across southeast Australia.

DAMAGING WINDS averaging 60 to 70 km/h, with gusts in excess of 90 km/h, are possible over elevated parts of southeast New South Wales during Tuesday. The most likely period for the strongest winds is from late morning until evening.

Alpine areas above 1900 metres may experience winds averaging 80 to 90 km/h, with gusts to around 110 km/h. BLIZZARD conditions are likely in these areas. The National Parks Service of NSW recommends that people consider postponing back country travel until conditions improve.

Locations which may be affected include Bowral, Braidwood, Goulburn, Bombala, Tidbinbilla, Jindabyne, Perisher Valley, Charlotte Pass, Thredbo, Selwyn, Adaminaby and Nimmitabel.

The State Emergency Service advises that people should:
* Move vehicles under cover or away from trees.
* Secure or put away loose items around your house, yard and balcony.
* Keep at least 8 metres away from fallen power lines or objects that may be energised, such as fences.
* Report fallen power lines to either Ausgrid on 131 388, or Endeavour Energy on 131 003 or Essential Energy on 132 080, as shown on your power bill.
* For emergency help in floods and storms, ring your local SES Unit on 132 500.